Small and inexpensive homebrew HF radio 5W Output, CW SSB AM FM, DSP, Speech Processor, Sprectrum Scope, Watefall Display. mcHF is a small, home-brewed amateur radio project. Firmware is released as open source.
Yaesu MH-31 Electret Condenser Mic Mod
An article that compare Morse Code to WSJT in EME operation mode.
A review by NJ1Q W1AW station manager about the Yaesu FT-7800R dual band FM mobile transceiver
An Active attenuator for transmitter hunting QST Article november 1992
King Conversions has extensive experience in amplifier repair and conversion King Conversions specialize in converting HF amplifiers to operate as monoband amps on 50 MHz
A Receive-Only, Low-Power APRS iGate made with Arduino
Official product page of the Mirage BD-35 dual band VHF UHF RF power amplifier
English version of the Yaesu FT-7800 operating manual